#include <func.h>

int main(int argc, char *argv[])
{
    ARGS_CHECK(argc, 3);

    // 1. 生成套接字描述符
    int sfd = socket(AF_INET, SOCK_STREAM, 0);

    
    struct sockaddr_in ser_addr; // 服务器信息结构体
    bzero(&ser_addr, sizeof(ser_addr));
    ser_addr.sin_family = AF_INET; // 使用IPv4
    ser_addr.sin_port = htons(atoi(argv[2])); // 端口号
    ser_addr.sin_addr.s_addr = inet_addr(argv[1]); // IP地址

    // 2. connect
    int ret = connect(sfd, (struct sockaddr *)&ser_addr, sizeof(ser_addr));
    ERROR_CHECK(ret, -1, "connect");

    // select实现实时聊天
    fd_set rdset;
    char buf[128] = {0};
    while (1)
    {
        FD_ZERO(&rdset);
        FD_SET(sfd, &rdset);
        FD_SET(STDIN_FILENO, &rdset);
        select(sfd + 1, &rdset, NULL, NULL, NULL);
        // 可发
        if (FD_ISSET(STDIN_FILENO, &rdset))
        {
            bzero(buf, sizeof(buf));
            read(STDIN_FILENO, buf, sizeof(buf));
            send(sfd, buf, strlen(buf) - 1, 0);
        }

        // 可收
        if (FD_ISSET(sfd, &rdset))
        {
            bzero(buf, sizeof(buf));
            ret = recv(sfd, buf, sizeof(buf), 0);
            if (!ret) 
            {
                printf("The other side break the chat\n");
                break;
            }
            printf("%s\n", buf);
        }
    }

    close(sfd);

    return 0;
}